The effect of 1,3:2,4-bis-O-(p-methlbenzylbenzylidene)-D-sorbitol(PDTS) on uniaxial elongational viscosity of polypropylene

Material type: 文書・図像類

Author: Uematsu, Hideyukiほか

Publisher: Dr. Dietrich Steikopff

Publication date: 2008

Material Format: Digital

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Note (General)：: We investigated the dynamic viscoelasticity and elongational viscosity of polypropylene (PP) containing 0.5wt% of 1,3:2,4-bis-O-(p-methylbenzylidene)-...

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Material Type: 文書・図像類
Title: The effect of 1,3:2,4-bis-O-(p-methlbenzylbenzylidene)-D-sorbitol(PDTS) on uniaxial elongational viscosity of polypropylene
Author/Editor: Uematsu, Hideyuki
Aoki, Yuji
Sugimoto, Masataka
Taniguchi, Takashi
Koyama, Kiyohito
Author Heading: Uematsu, Hideyuki
Aoki, Yuji
Sugimoto, Masataka
Taniguchi, Takashi
Koyama, Kiyohito
Publication, Distribution, etc.: Dr. Dietrich Steikopff
Publication Date: 2008
Publication Date (W3CDTF): 2008
Periodical title: Rheologica Acta
No. or year of volume/issue: 47 2
Volume: 47
Issue: 2
Pages: 237-242
Text Language Code: eng
Subject Heading: Polypropylene
PDTS
Sol-gel transition
Uniaxial elongational viscosity
Strain softening
Critical stress
Target Audience: 一般
Note (General): We investigated the dynamic viscoelasticity and elongational viscosity of polypropylene (PP) containing 0.5wt% of 1,3:2,4-bis-O-(p-methylbenzylidene)-D-sorbitol (PDTS). The PP/PDTS system exhibited a sol-gel transition (Tgel) at 193 °C. The critical exponent n was nearly equal to 2/3, in agreement with the value predicted by a percolation theory. This critical gel is due to a three-dimensional network structure of PDTS crystals. The elongational viscosity behavior of neat PP followed the linear viscosity growth function 3η+(t), where η+(t) is the shear stress growth function in the linear viscoelastic region. The elongational viscosity of the PP/PDTS system also followed the 3η+(t) above Tgel, but did not follow the 3η+(t) and exhibited strong strain-softening behavior below Tgel. This strain-softening can be attributed to breakage of the network structure of PDTS with a critical stress (σc) of about 104 Pa.
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ